Recoil check



C. A. NELSON.

RECOIL CHEQK. APPLICATION FILED SEPT- 2l, I918.

1 ,429,6 1 9 PatentedSept. 19, 1922.

' eliminatin Patented Sept;19, 1922.

CHARLES A. NELSON,

OF UTICA, NEW YORK, ASSIGNOR TO SAVAGE ATtMS CORPORA- TION, A CORPORATION OF DELAWARE. V

RECOID CHECK.

Application filed September 21, 1918. Serial No. 255,059.

To all whom it may concern:

Be it known that I, CHARLES A. NELSON, United States citizen, residing at Utica, New York, have invented the following described Improvements in Recoil Checks.

The invention is a simplified form of recoil checks for fire-arms and consists in the special shape and structural organization of the expansion case, gas passages and impact surface as herein below more full explained whereby a maximum checking e feet is obtained from an extremely small attachment on the muzzle of the gun and without causing the muzzle gases to be blown back into the-operators face. I am aware that there have been many attempts to utilize the velocity of the muzzle gases to aid in checking the recoil of guns and that many of the forms heretofore proposed are more or lessefi'ective for the purpose stated but none of them however, so far as I .know, are capable of the relative efliciency obtained by the organized combination of elements employed in the recoil check herein dis-- closed. I have succeeded for example in more than 60% of the recoil effect by t e use of a muzzle attachment no larger, in proportion to the calibre, than the check herein shown and without rearward discharge of the ases. The new device moreover is specially adapted to be manufactured cheaply but with a high degree of accuracy and of light weight and moderate suction the least likely to become deformed by sub ecti0n to high temperatures.

In the accompanylng drawing illustrating the preferred form of the invention- Fig. 1 is a rear elevation of the detached recoil check;

Fig. 2 is a longitudinal section of. the same as applied to a barrel and illustrates also the bullet in flight;

ligB is a front elevation of the check; an

Fig. 4 a side view. I

e check is made of two simple members permanently assembled prior to attachment to the gun. The cage member is formed with a'tubular threaded ferrule 1 provided with an internal shoulder'2 and an external notched terminal flange 3 affording a rim ip by which the check can be screwed to fii e muzzle of the gun asindicated in Fig. 2 with the internal shoulder 2 firmly seated on the end surface of the barrel. The edge of the shoulder 2 is coned at a substantially 45 angle to permit immediate expansion of the gas blast from the bore. From this shoulder the body wall of the case member extends forwardly as an imperforate cone 4 preferably at an angle of 45 or less and thence forwardly as an apertured cylindrical wall, the extreme forward end of which is internally shouldered and threaded to receive the bafile plate or impact member 5. The latter is formed as a circular disc with thickened periphery to be screwed into the cylindrical end of the expansion wall 4 and with a double bossed formation at its centre through which the passage for the bullet is bored and the rearward end 7 is taper-curved to a fairly thin edge representing the entrance to the bullet passage, the curvature being according to a circle of a radius about equal to, the guns caliber which brings the'plane of the .entrance to the bullet passage into substantial coincidence with the rear edges of the aperiwider than the bore of the barrel. The escape apertures 8 are oblong and designed to give the maximum escape for the muzzle gases consistent with the mechanlcal connection between the baflle plate and the expansion wall. Such escape, it will be observed occurs divergently forward and at substantially right angles to the barrel axis and none of the gas is directed rearwardly or toward the operator of the gun because the forward exit of the apertures 8 are even with the rear flat face of the baflle. A slight rearward direction of the escape holes 8 is not objectionable and does not require the use of a deflector to protect the operators face.

Claims:

1. A two-part recoil check comprising a flanged ferrule with an internal shoulder adapted to be screwed against the end of b the barrel and having a conical expansion wall extending imperforate forwardly from the barrel and apertured at its extreme forward end and a separately formed baflle plate rigidly secure'dj said wall beyond the apertures and formed with a bullet passage.

2. A recoil check comprising an imperforate expansion wall rigidly secured to and extending forwardly from the barrel end, gas escape apertures at the extreme end of said wall and a separately formed baflle plate having double opposed bosses surrounding the bullet passage therethrough and rigidly secured to said expansion wall.

3. A recoil check comprising an expansion wall extending forwardly from the gun barrel and provided with gas escape apertures and a baflle plate at the forward end having double opposed bosses surrounding the bullet passage, the rearward-bossbeing tapercurved, to bring the baffle plate toa desired transverse position and provide an elongated bullet passage;

4. -A recoil check comprising an expansion wall extending forwardly from. the gun barrel and provided with gas escape apertures, a baffle plate at its forward end having a thickened rim in threaded engagement with said wall and double opposed bosses forming an elon ated bullet passage.

5. A recoi check comprising a cage rigidly and directly attached to the gun barrel and extending forwardly therefrom as an imperforate conical wall provided with apertures beyond said conical Wall, and an immovable baflle plate at the apertured end of said cage, said baflie plate being provided with an elongated bullet passa e and its inner wall being sloped forwar ly from the inner end of said elongated bullet passage and extending radially," or transversely to the axis of the gun, at the front of the said apertures, so that the gases are directed toward the said apertures and out of the check in a radial direction.

6. A recoil check comprising a hollow 'imperforate' portion rigidly and directly secured to the gun barrel and projecting divergently therefrom and provided with gas escape apertures at its extremity, and a.

baffle plate having an elongated bullet passage, the outer edge of the inner wall of the baflie plate being substantially coincident with the'front of said apertures and the inner -end of the bullet passage being substantially coincident with the rear of said apertures and the said inner wall of the baflle plate sloping from said inner end of the bullet passage to the said outer edge of the plate to direct the gases through the apertures.

In testimony whereof, I have signed this specification. CHARLES A. NELSON. 

